audio: hal: add customized external smart pa code

add customized external smart pa control code

Change-Id: I667648a98f887bc488827fada6a00f9f987ff513
7 files changed
tree: 0c84567ad1d667960e6c5395871cfac2b5afe759
  1. hal/
  2. legacy/
  3. post_proc/
  4. visualizer/
  5. voice_processing/
  6. Android.mk